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Polymorphism and infection

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https://www.readbyqxmd.com/read/29145422/missense-mutation-at-cldn8-associated-with-a-high-plasma-interferon-gamma-inducible-protein-10-level-in-methadone-maintained-patients-with-urine-test-positive-for-morphine
#1
Tung-Hsia Liu, Ren-Hua Chung, Sheng-Chang Wang, Chiu-Ping Fang, Hsiao-Hui Tsou, Chia-Lung Shih, Hsiang-Wei Kuo, Yun Wang, Yu-Li Liu
We previously reported a high plasma chemokine interferon gamma-inducible protein 10 (IP-10) level and prolonged electrocardiography QT-interval in methadone maintenance treatment (MMT) patients with HIV or HCV infection. The purpose of this study was to evaluate the genetic association of high plasma IP-10 level in the MMT patients. The gene-based and pathway-based association analyses were conducted using a genome-wide association study dataset in 344 MMT patients for identifying genes and pathways associated with plasma IP-10 level...
2017: PloS One
https://www.readbyqxmd.com/read/29144546/presence-of-infection-and-analysis-of-hpv-subtypes-in-girls-younger-than-9-years-old-attended-at-a-referral-service-in-esp%C3%A3-rito-santo-brazil
#2
Mariana Penha De Nadai Sartori, Lidiane Pignaton Agostini, Thaís Tristão Tovar, Raquel Silva Dos Reis, Raquel Spinassé Dettogni, Eldamária de Vargas Wolfgramm Dos Santos, Antônio Chambô Filho, Iúri Drumond Louro
PURPOSE: Human papillomavirus is found in adults and adolescents and is associated with genital warts and cervical cancer. However, it has been detected in girls younger than 10 years old. Currently, there are no prevention methods for this age group, since it is not considered a risk group. The aim of this study was to evaluate the presence of infection and HPV subtype in girls under 9 years old attended at a referral service in the State of Espírito Santo, Brazil. METHODS: Forty-three girls younger than 9 years old had gynecological brush samples collected from vulval and perineal/anal regions...
November 16, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/29143991/genetic-and-non-genetic-risk-factors-for-pre-eclampsia-an-umbrella-review-of-systematic-reviews-and-meta-analyses-of-observational-studies
#3
REVIEW
Konstantinos Giannakou, Evangelos Evangelou, Stefania I Papatheodorou
OBJECTIVE: To summarize evidence from the literature on the risk factors associated with preeclampsia, assess the presence of statistical biases and identify associations with robust evidence. METHODS: We searched PubMed and ISI Web of Science from inception to October, 2016, to identify systematic reviews and meta-analyses of observational studies examining associations between genetic and non-genetic risk factors for preeclampsia. For each meta-analysis we estimated the summary effect size by random-effects and fixed-effects models, the 95% confidence interval and the 95% prediction interval...
November 16, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/29143663/dirofilaria-immitis-jyd-34-isolate-whole-genome-analysis
#4
Catherine Bourguinat, Francois Lefebvre, Johanna Sandoval, Brenda Bondesen, Yovany Moreno, Roger K Prichard
BACKGROUND: Macrocyclic lactone (ML) anthelmintics are used for chemoprophylaxis for heartworm infection in dogs and cats. Cases of dogs becoming infected with heartworms, despite apparent compliance to recommended chemoprophylaxis with approved preventives, has led to such cases being considered as suspected lack of efficacy (LOE). Recently, microfilariae collected from a small number of LOE isolates were used as a source of infection of new host dogs and confirmed to have reduced susceptibility to ML in controlled efficacy studies using L3 challenge in dogs...
November 9, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/29143133/association-of-dna-repair-genes-polymorphisms-and-mutations-with-increased-risk-of-head-and-neck-cancer-a-review
#5
REVIEW
Agata Dylawerska, Wojciech Barczak, Anna Wegner, Wojciech Golusinski, Wiktoria Maria Suchorska
DNA repair mechanisms allow maintain genomic stability and proper functioning within the cells. Any aberrations may cause an increased risk of many diseases such as cancer. The most crucial risk factors for head and neck squamous cell carcinoma are behavioral factors, predominantly chronic exposure to tobacco, alcohol addiction, and infection with human papillomavirus or Epstein-Barr virus. These agents can induce DNA damage; therefore, cells must activate appropriate mechanisms in order to function correctly...
November 15, 2017: Medical Oncology
https://www.readbyqxmd.com/read/29142552/atypical-chemokine-receptor-1-polymorphism-cannot-be-used-as-an-indicator-of-liver-fibrosis-progression-in-hepatitis-c-virus-positive-patients
#6
Lin-Nan Shao, Shu-Ting Zhang, Shi-Hang Zhou, Wei-Jian Yu, Ming Liu
Background & Objective: Atypical chemokine receptor 1(ACKR1) represents an atypical chemokine receptor that can bind promiscuously to various chemokines. Chemokines play a crucial role to recruit leukocyte subsets migration through the endothelium and into liver against the virus during the progression of hepatitis C virus (HCV) infection. Most HCV positive patients can lead to liver fibrosis. Hyaluronic acid (HA), laminin (LN), collagen IV(C-IV) and amino-terminal pro-peptide of Type-III pro-collagen (PIII NP) are indices of the extent of liver fibrosis...
September 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/29141757/protein-specific-features-associated-with-variability-in-human-antibody-responses-to-plasmodium-falciparum-malaria-antigens
#7
Eugene W Liu, Jeff Skinner, Tuan M Tran, Krishan Kumar, David L Narum, Aarti Jain, Aissata Ongoiba, Boubacar Traore, Philip L Felgner, Peter D Crompton
The magnitude of antibody responses varies across the individual proteins that constitute any given microorganism, both in the context of natural infection and vaccination with attenuated or inactivated pathogens. The protein-specific factors underlying this variability are poorly understood. In 267 individuals exposed to intense seasonal malaria, we examined the relationship between immunoglobulin G (IgG) responses to 861 Plasmodium falciparum proteins and specific features of these proteins, including their subcellular location, relative abundance, degree of polymorphism, and whether they are predicted to have human orthologs...
October 23, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29141248/association-of-functional-genetic-variants-of-hotair-with-hepatocellular-carcinoma-hcc-susceptibility-in-a-chinese-population
#8
Hao Li, Xian-Mei Tang, Yangchen Liu, Weizhen Li, Qiaoyun Chen, Yan Pan
BACKGROUND/AIMS: The HOX transcript antisense intergenic RNA (HOTAIR), a long non-coding RNA (lncRNA), plays an important role in the pathogenesis and progression of multiple tumors. The aim of the present study was to evaluate whether common single nucleotide polymorphisms (SNPs) in HOTAIR are related to hepatocellular carcinoma (HCC) susceptibility in a Chinese population. METHODS: We genotyped three SNPs of HOTAIR in a hepatocellular carcinoma (HCC) case-control study, including 482 cases and 520 control subjects...
November 15, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29140443/dc-sign-polymorphisms-associated-with-risk-of-hepatitis-c-virus-infection-among-men-who-have-sex-with-men-but-not-among-injecting-drug-users
#9
Gaby S Steba, Sylvie M Koekkoek, Joost W Vanhommerig, Kees Brinkman, David Kwa, Jan T M Van Der Meer, Maria Prins, Ben Berkhout, Michael Tanck, William A Paxton, Richard Molenkamp, Janke Schinkel
We aimed to identify whether genetic polymorphisms within L-SIGN or DC-SIGN correlate with HCV susceptibility. An MSM and an IDU cohort of HCV cases and multiple-exposed uninfected controls were genotyped for numerous L-SIGN and DC-SIGN polymorphisms. DC-SIGN SNPs -139, -871 and -939 correlate with HCV acquisition in the MSM cohort only. When the same SNPs were introduced into a transcription activity assay they demonstrated a reduction in expression with predicted alteration in binding of transcription factors...
November 13, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29136651/structural-basis-of-glycan-specificity-of-p-19-vp8-implications-for-rotavirus-zoonosis-and-evolution
#10
Yang Liu, Shenyuan Xu, Andrew L Woodruff, Ming Xia, Ming Tan, Michael A Kennedy, Xi Jiang
Recognition of specific cell surface glycans, mediated by the VP8* domain of the spike protein VP4, is the essential first step in rotavirus (RV) infection. Due to lack of direct structural information of virus-ligand interactions, the molecular basis of ligand-controlled host ranges of the major human RVs (P[8] and P[4]) in P[II] genogroup remains unknown. Here, through characterization of a minor P[II] RV (P[19]) that can infect both animals (pigs) and humans, we made an important advance to fill this knowledge gap by solving the crystal structures of the P[19] VP8* in complex with its ligands...
November 14, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/29136142/the-forkhead-transcription-factor-foxo3-negatively-regulates-natural-killer-cell-function-and-viral-clearance-in-myocarditis
#11
Madlen Loebel, Luise Holzhauser, Jelka A Hartwig, Praphulla C Shukla, Konstantinos Savvatis, Alexander Jenke, Martina Gast, Felicitas Escher, Sonya C Becker, Sandra Bauer, Andrea Stroux, Antje Beling, Meike Kespohl, Sandra Pinkert, Henry Fechner, Uwe Kuehl, Dirk Lassner, Wolfgang Poller, Heinz-Peter Schultheiss, Tanja Zeller, Stefan Blankenberg, Anna-Pia Papageorgiou, Stephane Heymans, Ulf Landmesser, Carmen Scheibenbogen, Carsten Skurk
Aims: Foxo3 is a transcription factor involved in cell metabolism, survival, and inflammatory disease. However, mechanistic insight in Foxo3 effects is still limited. Here, we investigated the role of Foxo3 on natural killer (NK) cell responses and its effects in viral myocarditis. Methods and results: Effects of Foxo3 on viral load and immune responses were investigated in a model of coxsackie virus B3 myocarditis in wild-type (WT) and Foxo3 deficient mice. Reduced immune cell infiltration, viral titres, and pro-inflammatory cytokines in cardiac tissue were observed in Foxo3-/- mice 7 days post-infection (p...
November 9, 2017: European Heart Journal
https://www.readbyqxmd.com/read/29135054/association-of-helicobacter-pylori-infection-with-toll-like-receptor-4-thr399ile-polymorphism-increased-the-risk-of-peptic-ulcer-development-in-north-of-iran
#12
Mehdi Tourani, Maryam Habibzadeh, Javad Shokri-Shirvani, Omid Teymournejad, Amrollah Mostafazadeh, Soraya Khafri, Hamid Reza Nouri
Toll-like receptor-4 (TLR4) polymorphisms may influence host immune response against Helicobacter pylori (H. pylori). This study aimed to investigate whether TLR4 polymorphisms are associated with H. pylori susceptibility and risk of peptic ulcer development or not. The TLR4 + 3725 G/C polymorphism was studied using polymerase chain reaction with confronting two-pair primers (PCR-CTPP). In addition, TLR4 Asp299Gly and Thr399Ile polymorphisms were evaluated by PCR-restriction fragment length polymorphism (RFLP)...
November 14, 2017: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
https://www.readbyqxmd.com/read/29134932/outbreak-of-pichia-kudriavzevii-fungaemia-in-a-neonatal-intensive-care-unit
#13
T Nagarathnamma, Sneha K Chunchanur, Shivaprakash M Rudramurthy, K R Vineetha, Karthik Ramamurthy, Jillwin Joseph, R Ambica
PURPOSE: Fungaemia is associated with substantial morbidity and mortality in neonates admitted to neonatal intensive care units (NICUs). We report an outbreak of fungaemia in a NICU due to rare yeast, Pichia kudriavzevii (a teleomorph of Candida krusei). To the best of our knowledge, this is the first report of neonatal sepsis due to P. kudriavzevii. METHODOLOGY: Between August and September 2014, blood cultures from nine neonates diagnosed with late-onset sepsis in the NICU yielded yeast-like organisms...
November 14, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/29133029/host-genetics-and-dengue-fever
#14
REVIEW
Caroline Xavier de Carvalho, Cynthia Chester Cardoso, Fernanda de Souza Gomes Kehdy, Antonio Guilherme Pacheco, Milton Ozório Moraes
Dengue is a major worldwide problem in tropical and subtropical areas; it is caused by four different viral serotypes, and it can manifest as asymptomatic, mild, or severe. Many factors interact to determine the severity of the disease, including the genetic profile of the infected patient. However, the mechanisms that lead to severe disease and eventually death have not been determined, and a great challenge is the early identification of patients who are more likely to progress to a worse health condition...
November 10, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/29132317/development-of-amplicon-deep-sequencing-markers-and-data-analysis-pipeline-for-genotyping-multi-clonal-malaria-infections
#15
Anita Lerch, Cristian Koepfli, Natalie E Hofmann, Camilla Messerli, Stephen Wilcox, Johanna H Kattenberg, Inoni Betuela, Liam O'Connor, Ivo Mueller, Ingrid Felger
BACKGROUND: Amplicon deep sequencing permits sensitive detection of minority clones and improves discriminatory power for genotyping multi-clone Plasmodium falciparum infections. New amplicon sequencing and data analysis protocols are needed for genotyping in epidemiological studies and drug efficacy trials of P. falciparum. METHODS: Targeted sequencing of molecular marker csp and novel marker cpmp was conducted in duplicate on mixtures of parasite culture strains and 37 field samples...
November 13, 2017: BMC Genomics
https://www.readbyqxmd.com/read/29132312/genomic-analysis-of-endemic-clones-of-toxigenic-and-non-toxigenic-corynebacterium-diphtheriae-in-belarus-during-and-after-the-major-epidemic-in-1990s
#16
Steffen Grosse-Kock, Valentina Kolodkina, Edward C Schwalbe, Jochen Blom, Andreas Burkovski, Paul A Hoskisson, Sylvain Brisse, Darren Smith, Iain C Sutcliffe, Leonid Titov, Vartul Sangal
BACKGROUND: Diphtheria remains a major public health concern with multiple recent outbreaks around the world. Moreover, invasive non-toxigenic strains have emerged globally causing severe infections. A diphtheria epidemic in the former Soviet Union in the 1990s resulted in ~5000 deaths. In this study, we analysed the genome sequences of a collection of 93 C. diphtheriae strains collected during and after this outbreak (1996 - 2014) in a former Soviet State, Belarus to understand the evolutionary dynamics and virulence capacities of these strains...
November 13, 2017: BMC Genomics
https://www.readbyqxmd.com/read/29132293/genomic-regions-associated-with-host-response-to-porcine-reproductive-and-respiratory-syndrome-vaccination-and-co-infection-in-nursery-pigs
#17
Jenelle R Dunkelberger, Nick V L Serão, Ziqing Weng, Emily H Waide, Megan C Niederwerder, Maureen A Kerrigan, Joan K Lunney, Raymond R R Rowland, Jack C M Dekkers
BACKGROUND: The WUR1000125 (WUR) single nucleotide polymorphism (SNP) can be used as a genetic marker for host response to porcine reproductive and respiratory syndrome (PRRS), PRRS vaccination, and co-infection with porcine circovirus type 2b (PCV2b). Objectives of this study were to identify genomic regions other than WUR associated with host response to PRRS vaccination and PRRSV/PCV2b co-infection and regions with a different effect on host response to co-infection, depending on previous vaccination for PRRS...
November 13, 2017: BMC Genomics
https://www.readbyqxmd.com/read/29131459/differential-contribution-of-interleukin-10-promoter-variants-in-malaria-and-schistosomiasis-mono-and-co-infections-among-nigerian-children
#18
Ayodele Adedoja, Nghiem Xuan Hoan, Hoang van Tong, Selorme Adukpo, Deborah B Tijani, Ajibola A Akanbi, Christian G Meyer, Olusola Ojurongbe, Thirumalaisamy P Velavan
OBJECTIVE: Interleukin-10 (IL-10) is an anti-inflammatory cytokine produced by Th1 cells and macrophages. The rationale of this study was to examine and validate possible contributions of IL-10 promoter polymorphisms in sub-Saharan Africa in children infected with either Plasmodium falciparum or Schistosoma haematobium and in children co-infected with both parasites. MATERIALS AND METHODS: 309 Nigerian children aged 4 to 15 years were recruited. The study group consisted of individuals infected either with P...
November 13, 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/29129607/polymorphisms-in-hla-c-and-kir-alleles-are-not-associated-with-ham-tsp-risk-in-htlv-1-infected-subjects
#19
Tatiane Assone, Fernanda M Malta, Sonia Bakkour, Leilani Montalvo, Arthur M Paiva, Jerusa Smid, Augusto César Penalva de Oliveira, Fernanda de Toledo Gonçalves, Olinda do Carmo Luiz, Luiz Augusto M Fonseca, Philip J Norris, Jorge Casseb
INTRODUCTION: Several genetic polymorphisms may be related to susceptibility or resistance to viral disease outcomes. Immunological or genetic factors may act as major triggers of the immune pathogenesis of HAM/TSP. This study investigated the association of immune related genetic polymorphisms with viral and immunological markers. METHODS: 247 HTLV-1-infected volunteers, drawn from a larger group of HTLV-infected subjects followed at the Institute of Infectious Diseases "Emilio Ribas" (IIER) for up to 19 years, participated in this study, which ran from June 2011 to July 2016...
November 10, 2017: Virus Research
https://www.readbyqxmd.com/read/29128634/vitamin-d-receptor-vdr-polymorphisms-are-associated-to-spontaneous-preterm-birth-and-maternal-aspects
#20
N R Javorski, C A D Lima, L V C Silva, S Crovella, J de Azêvedo Silva
Preterm birth (PTB) is featured by less than 37weeks of gestational age or fewer than 259days since the first day from the last menstrual period. Complications of PTB are the major cause of neonatal deaths, several factors are linked to PTB increased risk including immunological and genetics. Vitamin D plays an important role in immune response modulation and its action occurs through the vitamin D receptor (VDR), which recently has been described as overexpressed in human placenta during the pregnancy. Herein we assessed two single nucleotide polymorphisms (SNPs) FokI (rs2228570 A>G) and Cdx-2 (rs11568820 T>C), within VDR, using TaqMan fluorogenic probes, and differential susceptibility to SPTB...
November 8, 2017: Gene
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